h3 {
    font-weight: bold;
}

.credits {
    margin: 0 auto;
    max-width: 62rem;
    padding-top: 3rem;
}

main {
    margin: 0 auto;
    max-width: 62rem;
}

.date, .location {
    font-size: 1.2rem;
}

h2 {
    margin-bottom: 0;
    margin-top: 2rem;
}

.share {
    margin-bottom: 2rem;
}

/* 21 cards */
.presenters {
    margin: 0 auto;
    max-width: 62rem;
}

.presenters h2 {
    text-transform: uppercase;
}

@supports (display: grid) {
    .presenters {
        display: grid;
        grid-template-columns: repeat(2, 30rem);
        grid-template-rows: 3rem repeat(11, 27rem);
        grid-gap: 2rem;
    }
    .presenters h2 {
        grid-column: 1/3;
    }
}

.presenter {
    overflow: hidden;
    display: block;
    position: relative;
    max-width: 3;
    background-size: 100% auto;
    background-repeat: no-repeat;
    padding-top: 576px;
}

.presenter-info {
    box-sizing: border-box;
    padding: 0.5rem 1rem;
    width: 100%;
    z-index: 100;
    background-color: rgba(255,255,255,0.9);
    transition: transform 0.2s;
    padding-bottom: 2rem;
}

@supports (display: grid) {
    .presenter-info {
        overflow: hidden;
        overflow-x: hidden;
        overflow-y: auto;
    }
}

.presenter-info p {
    font-size: 1.1rem;
}

.presenter h3 {
    font-size: 1.4rem;
    line-height: 2rem;
    padding-bottom: 0.4rem;
}

@supports (display: grid) {
    .presenter {
        padding-top: 24rem;
    }

    .presenter-info {
        height: 25.3rem;
        padding-bottom: 0;
    }

    .presenter:hover .presenter-info, .presenter:focus .presenter-info {
        transform: translateY(-22.2rem);
    }
}

.credits {
    font-size: 1.2rem;
    line-height: 1.8rem;
    padding-bottom: 5rem;
}

.credits h2 {
    font-size: 1.2rem;
    font-weight: normal;
}

.credits section {
    padding-bottom: 1.2rem;
}

.credits div {
    display: block;
}

.credits h3 {
    clear: left;
    font-size: 1.2rem;
    display: inline;
}

.credits h3::after {
    content: ': ';
}

.credits h3.no-after::after {
    content: '';
}

.credits p {
    font-size: 1.2rem;
    display: inline;
}

.videos {
    margin-top: 3rem;
    list-style-type: none;
}

@supports (display: grid) {
    .videos {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        grid-gap: 2rem
    }
}

.videos li {
    background-color: #EEE;
    display: block;
    margin-bottom: 2rem;
}

@supports (display: grid) {
    .videos li {
        margin-bottom: 0;
    }
}

.videos img {
    width: 100%;
}

.videos a {
    background-size: cover;
    display: block;
    height: 100%;
    width: 100%;
    text-decoration: none;
}

.videos span {
    display: block;
    border-box: content-box;
    padding: 0.5rem 1rem;
    color: #222;
    text-decoration: none !important;
}

.lead {
    font-size: 1.2rem;
}

main header {
    background-color: #377AB1;
    color: #FFF;
    border-box: content-box;
    padding: 2rem;
    margin: 2rem 0;
}

header .date, header .location {
    text-align: right;
}

h1 {
    margin-top: 4rem;
    font-size: 2rem;
    font-weight: bold;
}
.primary h1 {
    margin-top: 0;
    background-image: url('this-is-bruin-life.svg');
    width: 100%;
    height: 15.5rem;
    background-size: contain;
    background-repeat: no-repeat;
    overflow: hidden;
    text-indent: -1000em;
}

.button-block {
    text-align: center;
    margin-top: 2rem;
}

@supports (display: grid) {
    .button-block {
        margin-top: 0;
    }
}

.survey {
    background-color: #377AB1;
    display: inline-block;
    padding: 0.4rem 1.4rem;
    color: #FFF;
    text-decoration: none;
    font-size: 1.6rem;
    transition: transform 0.2s;
}

.survey:hover, .survey:focus {
    transform: scale(1.03, 1.03);
}

.site-nav ul, .filter-nav ul {
    max-width: 64rem !important;
}

.intro {
    position: -webkit-sticky;
    position: sticky;
    top: 0;
    z-index: 1000;
}

@supports (display: grid) {
    @media (max-width: 1039px) {
        main {
            max-width: 100%;
            margin-top: 0;
            padding-top: 0;
        }

        main header {
            margin: 1.6rem;
        }

        .primary h1 {
            height: 20vw;
        }

        .overview, .event-info, .credits, .details {
            padding: 0 1.6rem;
        }

        .presenters h2 {
            text-transform: uppercase;
            padding-left: 1.6rem;
        }

        .presenter-info p {
            font-size: 0.9rem;
        }

        .presenters {
            margin: 0;
            padding: 0;
            grid-gap: 0;
            grid-template-columns: 1fr 1fr;
            grid-template-rows: 5rem repeat(11, 45vw);
        }

        .presenter {
            padding-top: calc(45vw - 3rem);
        }

        .presenter-info {
            height: calc(45vw - 2rem);
        }

        .presenter:hover .presenter-info, .presenter:focus .presenter-info {
            transform: translateY(calc(5rem - 45vw));
        }

        .videos {
            box-sizing: border-box;
            grid-template-columns: 1fr 1fr;
            grid-gap: 1rem;
        }

        .videos li {
            width: auto;
        }

        .videos li img {
            width: 100%;
            height: auto;
        }
    }

    @media (max-width: 699px) {
        .videos {
            grid-template-columns: 1fr;
        }

        .presenters {
            grid-template-columns: 1fr;
            grid-template-rows: 5rem repeat(21, 90vw);
        }

        .presenters h2 {
            grid-column: 1/2;
        }

        .presenter {
            padding-top: calc(90vw - 3rem);
        }

        .presenter-info {
            height: calc(90vw - 2rem);
        }

        .presenter:hover .presenter-info, .presenter:focus .presenter-info {
            transform: translateY(calc(5rem - 90vw));
        }
    }

    @media (max-width: 599px) {
        .credits {
            font-size: 1rem;
        }

        .credits h2, .credits p {
            font-size: 1rem;
        }
    }
}

@media screen and (-ms-high-contrast: active), screen and (-ms-high-contrast: none) {
    /* IE10+ specific styles go here */
    header, footer, main, article, .day, #event, img {
        width: 640px !important;
        max-width: 640px !important;
        margin: 0 auto !important;
    }

    .intro {
        margin-bottom: 1rem !important;
    }
}